Merge branch 'for_paulus' of master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc into for-2.6.21

3 files changed, 34 insertions, 32 deletions

diff --git a/arch/um/Kconfig.i386 b/arch/um/Kconfig.i386
index f191a550a07..d6cffb27fff 100644
--- a/arch/um/Kconfig.i386
+++ b/arch/um/Kconfig.i386
@@ -19,31 +19,31 @@ config SEMAPHORE_SLEEPERS
 choice
 	prompt "Host memory split"
 	default HOST_VMSPLIT_3G
-	---help---
-	   This is needed when the host kernel on which you run has a non-default
-	   (like 2G/2G) memory split, instead of the customary 3G/1G. If you did
-	   not recompile your own kernel but use the default distro's one, you can
-	   safely accept the "Default split" option.
-
-	   It can be enabled on recent (>=2.6.16-rc2) vanilla kernels via
-	   CONFIG_VM_SPLIT_*, or on previous kernels with special patches (-ck
-	   patchset by Con Kolivas, or other ones) - option names match closely the
-	   host CONFIG_VM_SPLIT_* ones.
-
-	   A lower setting (where 1G/3G is lowest and 3G/1G is higher) will
-	   tolerate even more "normal" host kernels, but an higher setting will be
-	   stricter.
-
-	   So, if you do not know what to do here, say 'Default split'.
-
-	config HOST_VMSPLIT_3G
-		bool "Default split (3G/1G user/kernel host split)"
-	config HOST_VMSPLIT_3G_OPT
-		bool "3G/1G user/kernel host split (for full 1G low memory)"
-	config HOST_VMSPLIT_2G
-		bool "2G/2G user/kernel host split"
-	config HOST_VMSPLIT_1G
-		bool "1G/3G user/kernel host split"
+	help
+        This is needed when the host kernel on which you run has a non-default
+	(like 2G/2G) memory split, instead of the customary 3G/1G. If you did
+	not recompile your own kernel but use the default distro's one, you can
+	safely accept the "Default split" option.
+
+	It can be enabled on recent (>=2.6.16-rc2) vanilla kernels via
+	CONFIG_VM_SPLIT_*, or on previous kernels with special patches (-ck
+	patchset by Con Kolivas, or other ones) - option names match closely the
+	host CONFIG_VM_SPLIT_* ones.
+
+	A lower setting (where 1G/3G is lowest and 3G/1G is higher) will
+	tolerate even more "normal" host kernels, but an higher setting will be
+	stricter.
+
+	So, if you do not know what to do here, say 'Default split'.
+
+config HOST_VMSPLIT_3G
+	bool "Default split (3G/1G user/kernel host split)"
+config HOST_VMSPLIT_3G_OPT
+	bool "3G/1G user/kernel host split (for full 1G low memory)"
+config HOST_VMSPLIT_2G
+	bool "2G/2G user/kernel host split"
+config HOST_VMSPLIT_1G
+	bool "1G/3G user/kernel host split"
 endchoice
 
 config TOP_ADDR
@@ -67,13 +67,13 @@ config 3_LEVEL_PGTABLES
 
 config STUB_CODE
 	hex
-	default 0xbfffe000 if !HOST_2G_2G
-	default 0x7fffe000 if HOST_2G_2G
+	default 0xbfffe000 if !HOST_VMSPLIT_2G
+	default 0x7fffe000 if HOST_VMSPLIT_2G
 
 config STUB_DATA
 	hex
-	default 0xbffff000 if !HOST_2G_2G
-	default 0x7ffff000 if HOST_2G_2G
+	default 0xbffff000 if !HOST_VMSPLIT_2G
+	default 0x7ffff000 if HOST_VMSPLIT_2G
 
 config STUB_START
 	hex
diff --git a/arch/um/sys-i386/signal.c b/arch/um/sys-i386/signal.c
index 0709fc6670c..3f6acd66771 100644
--- a/arch/um/sys-i386/signal.c
+++ b/arch/um/sys-i386/signal.c
@@ -219,7 +219,8 @@ int setup_signal_stack_sc(unsigned long stack_top, int sig,
 	unsigned long save_sp = PT_REGS_SP(regs);
 	int err = 0;
 
-	stack_top &= -8UL;
+	/* This is the same calculation as i386 - ((sp + 4) & 15) == 0 */
+	stack_top = ((stack_top + 4) & -16UL) - 4;
 	frame = (struct sigframe __user *) stack_top - 1;
 	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
 		return 1;
diff --git a/arch/um/sys-x86_64/signal.c b/arch/um/sys-x86_64/signal.c
index 9edf114faf7..af2f017617b 100644
--- a/arch/um/sys-x86_64/signal.c
+++ b/arch/um/sys-x86_64/signal.c
@@ -191,8 +191,9 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
 	struct task_struct *me = current;
 
 	frame = (struct rt_sigframe __user *)
-		round_down(stack_top - sizeof(struct rt_sigframe), 16) - 8;
-        frame = (struct rt_sigframe __user *) ((unsigned long) frame - 128);
+		round_down(stack_top - sizeof(struct rt_sigframe), 16);
+	/* Subtract 128 for a red zone and 8 for proper alignment */
+        frame = (struct rt_sigframe __user *) ((unsigned long) frame - 128 - 8);
 
 	if (!access_ok(VERIFY_WRITE, fp, sizeof(struct _fpstate)))
 		goto out;